Washing clothes with soap is difficult in hard water? Why?
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Those dissolved minerals hamper the effectiveness of many cleaningproducts. That's because minerals like calcium and magnesium prevent waterfrom mixing with detergent to form a solution. As a result, soap scum gets left behind. The same white, chalky substance in your sink and shower gets on your laundry
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because the a lot of soap is wasted to react with salts of magnesium and calcium which result in formation of scum which is insoluble precipitate in h2o
however hard water can be treated by adding washing powder (refer chap 2 )
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